Average Co-Inventor Count = 1.20
ph-index = 2
The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.
Company Filing History:
1. Matisa Materiel Industriel S.a. (3 from 31 patents)
3 patents:
1. 5337675 - Train for replacing a railroad track having retractable drive mechanisms
2. 5092247 - Process for converting a railway-track renewal train and vehicle for
3. 4606274 - Travelling railroad tie removal machine